//判断菜单节点是否是末级节点
export default function leafUtils(){
    const setLeaf =(arr) => {
    if(arr && arr.length >0){
    for(let i =0; i < arr.length;i++){
    if(arr[i].children && arr[i].children.length > 0){
    arr[i].open = false;
    setLeaf(arr[i].children)
    }else{
    arr[i].open = true;
    }
    }
    }
    return arr
    }
    return{
    setLeaf
    }
    }